Landsat Orbital Repeat Frequency and Cloud Contamination: A Case Study for Eastern United States

2019 ◽  
Vol 85 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Samuel N. Goward ◽  
Tatiana V. Loboda ◽  
Darrel L. Williams ◽  
Chengquan Huang
2019 ◽  
Vol 117 (5) ◽  
pp. 435-442
Author(s):  
Benjamin O Knapp ◽  
Samantha E Anderson ◽  
Patrick J Curtin ◽  
Casey Ghilardi ◽  
Robert G Rives

Abstract Securing oak regeneration is a common management challenge in the central and eastern United States. We quantified the abundance of tree species groups in clearcuts in mid-Missouri more than 30 years following harvest to determine differences in species dominance based on aspect (exposed, protected, or ridge sites). Each tree was classified as “dominant” or “suppressed” based on its relative contribution to cumulative stand stocking, following concepts of the tree–area relation. Although maples or understory species were the most abundant across all sites, oaks and hickories contributed to more than 60 percent of the dominant stems on the exposed sites. In contrast, oaks and hickories made up less than 25 percent of the dominant stems on protected and ridge sites. Results indicate that clearcutting reset the successional trajectory, from a transition to maple dominance to maintaining oak–hickory dominance, on exposed sites but not on ridge or protected sites.


2013 ◽  
Vol 10 (2) ◽  
pp. 198-228
Author(s):  
Guilherme Mansur Dias

This article examines temporary employment among foreign workers at the Okemo Mountain Resort, a tourist ski complex located in Vermont state in the north-eastern United States. I discuss the meanings associated with the international displacement of these workers, focusing especially on the ideas and imagery surrounding 'mobility', 'work,' 'travel' and 'youth.' By describing their experiences, along with the practices and discourses of the employer and the US State, the case study shows how Okemo's strategy of hiring a flexible foreign workforce is connected to the multiple meanings through which these groups represent their experience of temporary migration to the United States in the context of increasingly precarious labour relations. The ethnographic analysis proposed by the research provides a counterpoint to the 'macro-analytical' approach employed by most studies on the issue of foreign temporary work in the United States.


2014 ◽  
Vol 7 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Elisabeth Scheibelhofer

This paper focuses on gendered mobilities of highly skilled researchers working abroad. It is based on an empirical qualitative study that explored the mobility aspirations of Austrian scientists who were working in the United States at the time they were interviewed. Supported by a case study, the paper demonstrates how a qualitative research strategy including graphic drawings sketched by the interviewed persons can help us gain a better understanding of the gendered importance of social relations for the future mobility aspirations of scientists working abroad.


2015 ◽  
Vol 36-37 (1) ◽  
pp. 163-183
Author(s):  
Paul Taylor

John Rae, a Scottish antiquarian collector and spirit merchant, played a highly prominent role in the local natural history societies and exhibitions of nineteenth-century Aberdeen. While he modestly described his collection of archaeological lithics and other artefacts, principally drawn from Aberdeenshire but including some items from as far afield as the United States, as a mere ‘routh o’ auld nick-nackets' (abundance of old knick-knacks), a contemporary singled it out as ‘the best known in private hands' (Daily Free Press 4/5/91). After Rae's death, Glasgow Museums, National Museums Scotland, the University of Aberdeen Museum and the Pitt Rivers Museum in Oxford, as well as numerous individual private collectors, purchased items from the collection. Making use of historical and archive materials to explore the individual biography of Rae and his collection, this article examines how Rae's collecting and other antiquarian activities represent and mirror wider developments in both the ‘amateur’ antiquarianism carried out by Rae and his fellow collectors for reasons of self-improvement and moral education, and the ‘professional’ antiquarianism of the museums which purchased his artefacts. Considered in its wider nineteenth-century context, this is a representative case study of the early development of archaeology in the wider intellectual, scientific and social context of the era.


Sign in / Sign up

Export Citation Format

Share Document